5．come across 偶遇，发现

　　6．advantage 优点，长处

　　Ⅱ.巧用单元句式、语法

　　(一)完成句子

　　1．对你来说，买一本电子词典是一个明智的选择。(It is＋ n．＋for sb.to do sth.)

　　It is a wise choice for you to buy an electronic dictionary.

　　2．有几个因素促成了我的建议。(there be；which引导的定语从句)

　　There are several factors which lead to my suggestion.

　　3．在电子词典中，你会非常快地得到你所想要的。(what 引导的宾语从句)

　　You can get what you want in the electronic dictionary as soon as possible.

　　4．查阅这种词典很容易。(动名词短语作主语；习语a piece of cake)

　　Consulting this kind of dictionary is really a piece of cake.

　　5．当遇到有用的材料时，你可以尽可能多地储存下来。(when引导的时间状语从句)

　　When yon meet with the useful material，you can store it as much as possible.

　　6．它能够给你生动、清晰和正确的发音，就像一位老师站在你的旁边。(主语＋谓语＋宾语；like)

　　It can give you a vivid，clear and correct pronunciation just like a teacher standing by you.

　　7．这让它从众多的其他词典中脱颖而出。(make it outstanding)

　　That makes it outstanding from a variety of others.

　　(二)句式升级

　　8．用现在分词短语作定语改写句2

　　There are several factors leading to my suggestion.

　　9．用for合并句3、4

　　You can get what you want in the electronic dictionary as soon as possible，for consulting this kind of dictionary is really a piece of cake.

　　10．用状语从句的省略形式改写句5

　　When meeting with the useful material，you can store it as much as possible.